学 院： 专 业： 姓 名： 指导老师：北京理工大学珠海学院2013届本科生毕业设计
旋转LED的设计
学 号： 职 称： 中国·珠海 二○一三年五月
北京理工大学珠海学院2013届本科生毕业设计
北京理工大学珠海学院毕业设计
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本人郑重承诺：我所呈交的毕业设计《POV旋转LED显示器的设计》是在 教师的指导下，独立开展研究取得的成果，文中引用他人的观点和材料，均在文后按顺序列出其参考文献，设计使用的数据真实可靠。
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北京理工大学珠海学院2013届本科生毕业设计
POV旋转LED显示器的设计
摘 要
LED显示屏已广泛应用于众多公共场所，如：广告、银行、商场、广场、车站、公益宣传等。它具有功耗小、寿命长、色彩好等优点。现在普遍看到的 LED 显示屏主要采用 LED 平板模块做发光器件来组成整个显示屏，制作时需要的器件数量多，因此制作成本较高昂。
本文中将给出一种平面旋转LED显示屏—电风扇POV显示器。POV（英文全称Persistence of vision）是视觉暂留技术。电风扇POV显示器是用一种利用视觉暂留技术制作而成的平面旋转LED显示屏。POV LED可以用少数的LED取代大量的LED点阵，从而减少普通LED点阵显示屏因LED损坏而造成显示故障的几率，从而减少维修成本。从而解决普通LED显示屏器件数量多，成本高的问题。
关键词：POV 平面旋转
北京理工大学珠海学院2013届本科生毕业设计
Electric fan POV of display design
Abstract
LED display has been widely used in advertising, railway stations, Banks, shopping malls and other public places, it has advantages of low consumption, long life, good colour. Now the LED display is mainly used LED flat light-emitting device module, the display consists of LED module, device number, high cost.
This paper will give a plane rotary POV display LED display - electric fans POV display. POV (English full name Persistence of vision) is Persistence of vision technology. Electric fan POV display is made of a kind of persistence of vision technology.It is used in planar rotating LED display. POV of LED can use a few leds instead of a lot of led dot matrix, thus reducing the ordinary LED dot matrix display screen for damage caused by the LED display failure probability, thereby reducing maintenance cost. So as to solve ordinary LED display device number, the problem of high cost.
Keyword：POV Plane of rotation
北京理工大学珠海学院2013届本科生毕业设计
目 录
1绪论............................................................................................................................. 1
1.1引言.................................................................................................................. 1 1.2 本设计的意义................................................................................................. 1 1.3 POV的含义..................................................................................................... 2 1.4 国内外LED显示屏的发展现状 ................................................................... 2 1.5现有常见的LED方案的比较 ........................................................................ 3 1.6 LED显示屏研究现状总结 ............................................................................. 4 2系统的总体设计......................................................................................................... 5
2.1设计任务.......................................................................................................... 5 2.2 系统硬件框图................................................................................................. 5 3 系统硬件电路的设计................................................................................................ 6
3.1此设计涉及的主要技术................................................................................. 6 3.2 电机方案选择................................................................................................ 6 3.3 供电方案选择................................................................................................. 7 3.4 主控元件......................................................................................................... 8 3.5硬件原理图.................................................................................................... 11 4 系统软件的设计...................................................................................................... 12
4.1软件设计流程图............................................................................................ 12 4.2 LED点阵代码生成 ....................................................................................... 13 5 硬件的安装与调试.................................................................................................. 17 6 总结.......................................................................................................................... 19 参考文献...................................................................................................................... 20 谢辞.............................................................................................................................. 21 附录.............................................................................................................................. 22